Light-emitting device having light-reflective layer formed with, or/and adjacent to, material that enhances device performance
First Claim
1. A structure comprising:
- a plate;
a light-emissive region overlying the plate where the plate is generally transmissive of visible light;
a light-blocking region overlying the plate generally lateral to the light-emissive region, the light-blocking region being generally non-transmissive of visible light; and
a light-reflective layer extending over the light-emissive region and comprising non-aluminum metal consisting of at least one of lithium, beryllium, boron, sodium, and magnesium.
5 Assignments
0 Petitions
Accused Products
Abstract
A light-emitting device (42, 68, 80, 90, or 100) suitable for a flat-panel CRT display contains a plate (54), a light-emissive region (56), a light-blocking region (58), and a light-reflective layer (60 or 70). The light-emitting device achieves one or more of the following characteristics by suitably implementing the light-reflective layer or/and providing one or more layers (72, 82, 92, and 100) along the light-reflective layer: (a) reduced electron energy loss as electrons pass through the light-reflective layer, (b) gettering along the light-reflective layer, (c) reduced secondary electron emission along the light-reflective layer, (d) reduced electron backscattering along the light-reflective layer, and (e) reduced chemical reactivity along the light-reflective layer.
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Citations
128 Claims
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1. A structure comprising:
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a plate;
a light-emissive region overlying the plate where the plate is generally transmissive of visible light;
a light-blocking region overlying the plate generally lateral to the light-emissive region, the light-blocking region being generally non-transmissive of visible light; and
a light-reflective layer extending over the light-emissive region and comprising non-aluminum metal consisting of at least one of lithium, beryllium, boron, sodium, and magnesium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 98, 99, 100)
a first sublayer overlying the light-emissive region and consisting primarily of aluminum; and
a second sublayer overlying the first sublayer and comprising more by mass of the non-aluminum metal than aluminum.
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7. A structure as in claim 6 wherein the non-aluminum metal in the second sublayer consists primarily of at least one of beryllium, boron, and magnesium.
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8. A structure as in claim 6 wherein the non-aluminum metal in the second sublayer consists substantially of beryllium.
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9. A structure as in claim 1 wherein the light-reflective layer also extends over the light-blocking region.
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10. A structure as in claim 1 further including an electron-emitting device for emitting electrons which pass through the light-reflective layer and strike the light-emissive region, causing it to emit visible light.
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98. A structure as in claim 1 wherein the light-blocking region absorbs visible light.
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99. A structure as in claim 1 wherein the light-blocking region substantially laterally surrounds the light-emissive region as viewed perpendicular to the plate.
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100. A structure as in claim 1 further including at least one additional light-emissive region overlying the plate where the plate is generally transmissive of visible light, each light-emissive legion spaced laterally apart from each other light-emissive region, the light-blocking region laterally surrounding each light-emissive region as viewed perpendicular to the plate, the light-reflective layer extending above each additional light-emissive region.
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11. A structure comprising:
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a plate;
a light-emissive region overlying the plate where the plate is generally transmissive of visible light;
a light-blocking region overlying the plate generally lateral to the light-emissive region, the light-blocking region being generally non-transmissive of visible light; and
a light-reflective getting layer extending over the light-emissive region and comprising at least one of magnesium, chromium, manganese, cobalt, copper, molybdenum, palladium, silver, platinum, and lead. - View Dependent Claims (12, 13, 14, 15, 101, 102, 103)
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16. A structure comprising:
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a plate;
a light-emissive region overlying the plate where the plate is generally transmissive of visible light;
a light-blocking region overlying the plate generally lateral to the light-emissive region, the light-blocking region being generally non-transmissive of visible light;
a light-reflective layer extending over the light-emissive region; and
an overcoat layer overlying the light-reflective layer, providing at least one of (a) lower chemical reactivity than an imaginary native coating of aluminum oxide formed along an imaginary aluminum layer and subjected to electrons which impinge on the native coating with generally the same energies and at generally the same angles as electrons impinge on the overcoat layer from above the structure, (b) lower secondary electron emission per unit area than the native coating, and (c) lower electron backscattering per unit area than the native coating, and comprising at least one of beryllium, boron, magnesium, silicon, chromium, cobalt, germanium, ruthenium, silver, tin, neodymium, iridium, platinum, gold, lead, lithium-aluminum, beryllium-boron, beryllium carbide, beryllium oxide, beryllium-aluminum, boron nitride, boron oxide, boron-magnesium, boron-aluminum, sodium carbide, sodium nitride, sodium oxide, sodium-aluminum, magnesium-aluminum, aluminum nitride, silicon nitride, silicon oxide, vanadium oxide, vanadium phosphorus oxide, chromium oxide, copper oxide, molybdenum oxide, silver oxide, cerium oxide, neodymium oxide, and europium oxide. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 104, 105, 106, 107, 108)
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45. A structure comprising:
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a plate;
a light-emissive region overlying the plate where the plate is generally transmissive of visible light;
a light-blocking region overlying the plate generally lateral to the light-emissive region, the light-blocking region being generally non-transmissive of visible light;
a light-reflective layer extending over the light-emissive region; and
an overcoat layer overlying the light-reflective layer and comprising at least one of beryllium, boron, silicon, chromium, cobalt, germanium, ruthenium, silver, tin, iridium, platinum, gold, lead, boron nitride, boron oxide, aluminum nitride, silicon nitride, silicon oxide, and chromium oxide. - View Dependent Claims (109, 110)
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46. A structure comprising:
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a plate;
a light-emissive region overlying the plate where the plate is generally transmissive of visible light;
a light-blocking region overlying the plate generally lateral to the light-emissive region, the light-blocking region being generally non-transmissive of visible light;
a light-reflective layer extending over the light-emissive region; and
an overcoat layer overlying the light-reflective layer and comprising at least one of chromium, silver, neodymium, gold, beryllium oxide, vanadium oxide, vanadium phosphorus oxide, chromium oxide, copper oxide, molybdenum oxide, silver oxide, cerium oxide, neodymium oxide, and europium oxide. - View Dependent Claims (111, 112)
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47. A structure comprising:
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a plate;
a light-emissive region overlying the plate where the plate is generally transmissive of visible light;
a light-blocking region overlying the plate generally lateral to the light-emissive region, the light-blocking region being generally non-transmissive of visible light;
a light-reflective layer extending over the light-emissive region; and
an overcoat layer overlying the light-reflective layer and comprising at least one of beryllium, boron, magnesium, lithium-aluminum, beryllium-boron, beryllium carbide, beryllium-aluminum, boron nitride, boron oxide, boron-magnesium, boron-aluminum, sodium carbide, sodium nitride, sodium oxide, sodium-aluminum, magnesium-aluminum, and aluminum nitride. - View Dependent Claims (113, 114)
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48. A structure comprising:
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a plate;
a light-emissive region overlying the plate where the plate is generally transmissive of visible light;
a light-blocking region overlying the plate generally lateral to the light-emissive region, the light-blocking region being generally non-transmissive of visible light;
a light-reflective layer extending over the light-emissive region;
a lower overcoat layer overlying the light-reflective layer; and
an upper overcoat layer overlying the lower overcoat layer, the two overcoat layers being of different chemical composition, each overcoat layer providing at least one of (a) lower chemical reactivity than an imaginary native coating of aluminum oxide formed along an imaginary aluminum layer and subjected to electrons which impinge on the native coating with generally the same energies and at generally the same angles as electrons impinge on the overcoat layers from above the structure, (b) lower secondary electron emission per unit area than the native coating, and (c) lower electron backscattering per unit area than the native coating. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 115, 116, 117, 118, 119)
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74. A structure comprising:
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a plate;
a light-emissive region overlying the plate where the plate is generally transmissive of visible light;
a light-blocking region overlying the plate generally lateral to the light-emissive region, the light-blocking region being generally non-transmissive of visible light;
a light-reflective layer extending over the light-emissive region; and
an overcoat getter overlying the light-reflective layer and comprising at least one of magnesium, chromium, cobalt, copper, palladium, silver, platinum, lead, and oxide of at least one of magnesium, chromium, manganese, cobalt, nickel, and lead. - View Dependent Claims (75, 76, 77, 78, 79, 120)
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80. A structure comprising:
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a plate;
a light-emissive region overlying the plate where the plate is generally transmissive of visible light;
a light-blocking region overlying the plate generally lateral to the light-emissive region, the light-blocking region being generally non-transmissive of visible light;
a light-reflective layer extending over the light-emissive and light-blocking regions; and
an overcoating getter layer overlying the light-reflective layer above the light-blocking region and comprising at least one of magnesium, chromium, cobalt, copper, palladium, silver, platinum, lead, and oxide of at least one of magnesium, chromium, manganese, cobalt, nickel, and lead. - View Dependent Claims (81, 82, 83, 121)
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84. A structure comprising:
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a plate;
a light-emissive region overlying the plate;
a light-blocking region overlying the plate generally lateral to the light-emissive region, the light-blocking region being generally non-transmissive of visible light;
an undercoat layer overlying the light-emissive region and being generally transmissive of visible light; and
a light-reflective layer overlying the undercoat layer and extending above the light-emissive region, the undercoat layer more strongly inhibiting the light-reflective layer from undergoing chemical reactions along where it is closest to the undercoat layer than does an imaginary native coating of aluminum oxide formed along an imaginary aluminum layer inhibit the aluminum layer from undergoing chemical reactions along its interface with the native coating. - View Dependent Claims (85, 86, 87, 88, 89, 90, 122, 123, 124, 125, 126)
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91. A structure comprising:
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a plate;
a light-emissive region overlying the plate where the plate is generally transmissive of visible light;
a light-blocking region overlying the plate generally lateral to the light-emissive region, the light-blocking region being generally non-transmissive of visible light;
an undercoat layer overlying the light-emissive region, being generally transmissive of visible light, and comprising at least one of silicon nitride, silicon oxide, magnesium oxide, aluminum nitride, aluminum oxide of greater thickness than an imaginary native coating of aluminum oxide formed along an imaginary aluminum layer, chromium oxide, zirconium oxide, indium oxide, indium tin oxide, and tin oxide; and
a light-reflective layer overlying the undercoat layer and extending above the light-emissive region. - View Dependent Claims (127)
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92. A structure comprising:
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a plate;
a light-emissive region overlying the plate where the plate is generally transmissive of visible light;
a light-blocking region overlying the plate generally lateral to the light-emissive region, the light-blocking region being generally non-transmissive of visible light;
an undercoating getter layer overlying the light-blocking region and comprising at least one of magnesium, chromium, manganese, cobalt, nickel, copper, palladium, silver, platinum, lead, and oxide of at least one of magnesium, chromium, manganese, cobalt, nickel, and lead; and
a light-reflective layer extending over the getter layer above the light-blocking region. - View Dependent Claims (93, 94, 95, 96, 97, 128)
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Specification